1965 Formula S w/AC: What is Factory Correct Fan?

Just to act as a moderator here, perhaps both fans were used with A/C, but we have not figured out under which conditions/options the thermal fan was used. I only say this because my Formula "S" certainly had A/C and it has the non-thermal fan. Not saying it could not have been swapped some time in the past, but I have a hunch both contributors to this thread may be correct! Maybe a mid-year change/update perhaps?

I guess if we really want to delve deeper into the mystery, we could begin by looking up our production/delivery dates.